When you 'add from directory' - add a box to type / paste the folder path in (because it is considerably quicker at times).

Because it can be quicker / easier than having to browser through multiple directories each time (especially if you use a folder naming system - as many do).

Perhaps even being able to type multiple folder when useing "add from directory".

e.g.
I:\Master - Photos\40919-ab\residual\Simon 00101
I:\Master - Photos\40919-ab\residual\Simon 00115
I:\Master - Photos\40919-ab\residual\Jane 00111I\clinic\am
I:\Master - Photos\40919-ab\residual\Jane 00111I\clinic\pm